14 documents found, page 1 of 2
Energy performance factors in wastewater treatment plants: A review
Cardoso, B. J.; Rodrigues, E.; Gaspar, A. R.; Gomes, Á.Given their increasing number and the implementation of more energy-intensive treatment methods, wastewater treatment plants (WWTPs) expect to increase energy consumption. In addition, climate change presents new challenges to the operation of these facilities, thus being critical to understand how to improve their energy performance and environmental sustainability while ensuring the quality of service provide...
Can movable PCM-filled TES units be used to improve the performance of PV panel...
Soares, N.; Costa, J. J.; Gaspar, A. R.; Matias, T.; Simões, Pedro Nuno; Durães, L.
Are our management actions good enough to preserve collections?
Saraiva, N. G.; Pereira, G.; Gaspar, A. R.; Costa, J. J.Historic buildings which are open to tourists require an extra care when it comes to the management process. It is intended to provide the best cultural experience possible while, at the same time, ensure an appropriate conservation standard. The problem arises when the management staff is not qualified enough or implements strategies that do not meet the patrimony needs. Opting to install climate control equip...
Thermal regulation of photovoltaic modules using thermal energy storage units w...
Soares, N.; Gaspar, A. R.; Nunes, F.; Lourenço, V.; Costa, J.J.High operating temperatures reduce the performance of commercial polycrystalline silicon photovoltaic (PV) devices by reducing the efficiency of solar to electrical energy conversion in the PV cells. This paper presents the major developments in the construction of a real-scale experimental apparatus to evaluate the efficiency improvement of PV systems by placing a movable thermal energy storage (TES) unit fill...
Systems with PCM-filled rectangular cavities for the storage of solar thermal e...
Soares, N.; Lopes, A. G.; Gonçalves, M.; Gaspar, A. R.; Martins, C.; Matias, T.; Santos, P.; Simões, P. N.; Durães, L.; Costa, J. J.This paper provides an overview of the ongoing research project "PCMs4Buildings - Systems with PCM-filled rectangular cavities for the storage of solar thermal energy for buildings". The main goal of this project is to develop a holistic approach for the experimental and numerical evaluation of the thermal behaviour of new thermal energy storage (TES) systems with rectangular cavities filled with phase change m...
Apresentação do projeto PCMs4Buildings
Soares, N.; Lopes, A. G.; Gaspar, A. R.; Martins, C.; Durães, L.; Gonçalves, M.; Santos, P.; Simões, P. N.; Matias, T.; Costa, J.J.
Optimization of a thermal energy storage system provided with an adsorption mod...
Fernandes, M. S.; Gaspar, A. R.; Costa, V. A. F.; Costa, J. J.; Brites, G. J. V. N.The optimization and assessment study of a thermal energy adsorption storage system is presented. The system integrates an adsorption heat storage module in a conventional hot water storage tank of a solar thermal system, operating with the silica-gel/water adsorption pair. The system was modeled using TRNSYS® and MATLAB®, and was previously assessed and improved through a set of parametric tests for each main ...
Thermal management of photovoltaics with thermal energy storage units filled wi...
Soares, N.; Antunes, P.; Gaspar, A. R.; Costa, J. J.High operating temperatures reduce the performance of photovoltaic (PV) devices by reducing the efficiency of solar to electrical energy conversion in the PV cells. This paper presents a numerical study based on the effective heat capacity method to evaluate the thermal performance of a PV system incorporating a thermal energy storage unit filled with a microencapsulated phase change material (PCM) – Micronal® ...
Apresentação do projeto PCMs4Buildings - Sistemas com cavidades retangulares co...
Soares, N.; Lopes, A.G.; Gaspar, A. R.; Durães, L.; Gonçalves, M.; Santos, P.; Simões, P. N.; Matias, T.; Costa, J.J.
Thermal energy storage with phase change materials (PCMs) for the improvement o...
Soares, N.; Gaspar, A. R.; Santos, P.; Reinhart, C.F.; Costa, J.J.Main Goals: - To evaluate how PCMs can be used to improve the energy performance of different typologies of residential buildings (lightweight steel-framed and heavyweight constructions) in different climates; -To develop a methodology for the dynamic simulation of energy in buildings considering the influence of latent heat from the phase change processes; - To develop a methodology for the assessment of the h...